Vulnerability identifier: #VU96330

Vulnerability risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-48873

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the fastrpc_free_map(), fastrpc_buf_free() and fastrpc_device_release() functions in drivers/misc/fastrpc.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/4b5c44e924a571d0ad07054de549624fbc04e4d7
http://git.kernel.org/stable/c/193cd853145b63e670bd73740250983af1475330
http://git.kernel.org/stable/c/1b7b7bb400dd13dcb03fc6e591bb7ca4664bbec8
http://git.kernel.org/stable/c/35ddd482345c43d9eec1f3406c0f20a95ed4054b
http://git.kernel.org/stable/c/5bb96c8f9268e2fdb0e5321cbc358ee5941efc15

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.